For the test:H0:μ1=μ2 vs Ha:μ1>μ2 , it was found based on samples n1=7 and n2=6 , a tc=3.5 then, with a significance level of 5% it can be stated that: a) μ1 =μ2 b) μ1 >μ2 c) it is not true that μ1 =μ2 d) it is not true that μ1 >μ2
Q: In a previous year, 56% of females aged 15 and older lived alone. A sociologist tests whether this…
A: It was stated that in a previous year, 56% of females aged 15 and older lived alone. A sociologist…
Q: To test the classic debate about which tastes better, Coke or Pepsi, we sampled 252 children and…
A: Coke choosen by 169 Pepsi choose by 83
Q: A paired difference experiment yielded the results shown below. na = 45 Xd = 16.4 a. Test Ho: Hd =…
A:
Q: In a study to test whether or not there is a difference between the average heights of adult females…
A:
Q: Suppose u, and Hz are true mean stopping distances at 50 mph for cars of a certain type equipped…
A: Given, xbar = 113.2, m = 5, s1 = 5.05 ybar = 129.1, n = 5 , s2 = 5.39 Null hypothesis: Alternative…
Q: 4. Set up the null and alternative hypotheses to test whether there is any difference between the…
A:
Q: (b) In an experiment to compare the bond strength of two different adhesives, each adhesive was used…
A:
Q: From the given problem below, a. State the null and the alternative hypotheses b. Compute the test…
A: From the provided information, Sample size (n) = 50 Sample mean (x̄) = 122.50 Population standard…
Q: Two types of plastic are suitable for an electronics component manufacturer to use. The breaking…
A: Given Data : For Sample 1 x̄1 = 162.5 σ1 = 1 n1 = 10 For Sample 2 x̄2 = 155…
Q: An experiment to compare the spreading rates of five different brands of yellow interior latex paint…
A: I am providing you the table
Q: are sampled areas of a city. All intersections have approximately equal daily traffic. Ten of the…
A: Mann whitney U test : The distinction between the 2 rank totals is mirrored within the Mann-Whitney…
Q: B F rch company tests the effectiveness of three new flavorings for a new sauce using a sar vor 1,…
A: Given,
Q: For a sample of size n = 15, the critical z-score for 82% confidence is (two-decimal accuracy,…
A:
Q: The test statistic of z= - 1.56 is obtained when testing the claim that p < 0.51. A) using a…
A: We have given that Test statistic (z) = -1.56 p < 0.51 (claim) Hence, it is left tailed test…
Q: In a test of Ho: µ = 100 against Ha: µ 100, a sample of size 80 produces z = 0.8 for the value of…
A: Given: z =0.8 The null and alternative hypothesis are: H0: μ=100 Ha: μ≠100 It is a two tailed…
Q: A health researcher is interested in comparing 3 methods of weight loss: low calorie diet, low fat…
A: First enter this data into Excel The hypothesis can be formed as
Q: The number of contaminating particles on a silicon waferprior to a certain rinsing process was…
A:
Q: The size of leaves taken from bramble bushes were measured to see if there is a difference between…
A: Solution : Given data is, Sunlight 6.0 4.8 5.1 5.5 4.1 5.3 4.5 5.1Shade 6.5 5.5 6.3 7.2 6.8 5.5…
Q: . In a city A 20% of a random sample of 900 school boys had a certain slight physicas aefect. In…
A:
Q: a. An experiment to compare the tension bond strength of polymer lates modified mortar to that of…
A: Following are the Explanation of the question Use the Two sample Z test to Compare the two groups of…
Q: A two-sample t-test for a difference in means was conducted to investigate whether there is a…
A: Given: Test Statistic = 2.201 P-value = 0.027
Q: A mixture of pulverized fuel ash and Portland cement to be used for grouting should have a…
A: Given: Hypothesized mean = 1300 Actual population mean = 1350 Population standard deviation = 65…
Q: In a test of the ability of a certain polymer to remove toxic wastes from water, experiments were…
A: Given Information: Low Medium High 42 35 28 41 42 30 40 34 32 40 38 35 29 42 46
Q: The performance of two analysts in determining total mercury (mg / kg) in fish was evaluated using…
A: (a). Given, α=1-0.95=0.05 The results on the concentrations of mercury found in fish- Analyst 1…
Q: A one sample t test has n = 12. If using a two-tail test (proportion in two tails combined) with an…
A: Sample size n=2.201 Significance level α=0.05 The degrees of freedom n-1=12-1=11
Q: Dr. Romanoff reported the following in a journal: “F (5, 106) = 10.09, p = .04.” Should Dr.…
A: It is given that p- value is 0.04 and the level of significance is 0.05.
Q: The data for this question appears in Table Fifty randomly-select Durham city burials (1920-1929)] .…
A: Assume that x and n are defined as the total number of individuals who were aged 65 or older at the…
Q: The desired percentage of SIO, in a certain type of aluminous cement is 5.5. To test whether the…
A: Given, -x = 5.24 σ = 0.32 α = 0.05
Q: In a test of H0: µ = 50 against Ha: µ > 50, the sample data yielded the test statistic z = 2.24.…
A: Given, H0: µ = 50 against Ha: µ > 50, the sample data yielded the test statistic z = 2.24
Q: Given the linear correl ation coefficient r and the sample size n, determine the critical values of…
A: Given : r = -0.466 n = 15
Q: In a completely randomized experimental design, three brands of paper towels were tested for their…
A: The random variable is ability to absorb water. There are 3 independent samples which are 3 brands…
Q: given normally distributed sample x=12 and s=3, use the Empirical Rule determine the upper and lower…
A: According to the empirical rule,
Q: A state-by-state survey found that the proportions of adults who are smokers in state A and state B…
A:
Q: For the model Y = Bo + B1X1 + B2X2 + B3X3 + B4X4 + ɛ. When testing Ho: B3 = 0 vs. Hai B3 # 0 at a =…
A: There are 4 independent variables. The dependent variable is Y. We have to test for significance of…
Q: Based on the Exercise 6.2(3), test the hypothesis concerning H, : B = 2 against the H : B, #2 at the…
A:
Q: A certain drug can be used to reduce the acid produced by the body and heal damage to the esophagus…
A: Normality conditions are satisfied : 226*0.93*0.07 = 14.71 which is ≥10 Sample is representing more…
Q: Suppose μ1 and μ2 are real average stopping distances at 50 mph of a certain type of car equipped…
A: H0: (μ1 - μ2 = -10) vs. Ha: (μ1 - μ2 < -10) for the following data: m = 6 ; x̄ = 115,7 ; s1 =…
Q: The test statistic of z= -3.32 is obtained when testing the claim that p <0.45. a. Using a…
A: It is given that Test statistic Z = -3.32 Claim : p < 0.45
Q: 18. A test of the hypotheses Ho: =0 vs. H.: p>0 was conducted using a sample size of 7. The test…
A: Null and the alternative hypothesis: The value of test statistic is, t = 1.935. Degree of freedom:
Q: 5:(15 pts ). A random sample of 20 specimens of cobrdlar steel ylelded a Sompleaverage yield strenp…
A: n1 = 20 n2 = 25 x1 = 205 x2 = 239 s1 = 27 s2 = 35
Q: Suppose a linear model y=β0+β1xy=β0+β1x is fit to a sample data set, and a test of the null…
A: The linear model is y = β0 + β1x, where y is the dependent variable, x is the independent variable,…
Q: 10. In a randomized clinical trial, 888 people were placed given Drug A and 930 were given Drug B.…
A: Note: As per our company guidelines we are supposed to answer the first question only. Kindly ask…
Q: A local home inspector wants to test for lead levels in 10 homes using two different testing methods…
A: t test for two independent sample with equal variance is the appropriate test to determine whether…
Q: A test of H₂: H=50 versus H₁M #50 is performed using a significance level of α = 0.01. The value of…
A:
Q: The sample correlation coefficient between X and Y is 0.375. It has been found out that the p-value…
A: Given : Sample correlation between X and Y = 0.375 p-value = 0.256 when testing Ho: p = 0…
Q: Match the hypothesis, sample sizes and alpha to the critical value(s) 12; N1= 23; N2 = 31; a =0.05…
A: Match the hypothesis sample sizes and alpha to the critical value(s)
Q: Let X1,X2, ...,Xn be a random sample drawn from a N (µ, o2) distribution, where known and o2 is…
A: Introduction: An estimator is said to be a consistent estimator for a parameter, if it converges in…
Q: Score: 0 of 1 pt 12 of 28 (12 complete) Instructor-created question Course Note Packet Chapter 9…
A:
Q: Measurements of the sodium content in samples of two brands of chocolate yielded the following…
A: We want to test the hypothesis
Q: The test statistic of z = -2.27 is obtained when testing the claim that p < 0.32 Part A: using a…
A: Answer is in step below Thanks!
For the test:H0:μ1=μ2 vs Ha:μ1>μ2 , it was found based on samples n1=7 and n2=6 , a tc=3.5 then, with a significance level of 5% it can be stated that:
a) μ1 =μ2
b) μ1 >μ2
c) it is not true that μ1 =μ2
d) it is not true that μ1 >μ2
Step by step
Solved in 2 steps
- A nationwide study of undergraduate students reported that the mean number of drinks consumed per week during the spring semester is 7.96. The mean number of drinks consumed per week at USC is 7.64 (s.d.=2.55, N=412 Health services is concerned that USC students are consuming significantly more alcohol per week than the national average. Using an alpha level of .05, Is there sufficient evidence to be concerned? Be sure to select the correct critical value for the alternative hypothesis, and then use this evidence to make your conclusionIn a test of H0: p = 0.8 against H1: p ≠ 0.8, a sample of size 1000 produces Z = 2.05 for the value of the test statistic. Thus the p-value (or observed level of significance) of the test is approximately equal to:two samples are analyzed, such that sample 1 values are m_{1} = 93 and S*S_{1} = 200 and sample 2 values are m_{2} = 85 and S*S_{2} = 160 and the estimated standard error is 2, what is the correct calculation for the independent samples t-test?
- the assumption that the t test for independent samples makes regarding the amount of variability in each of the two groups is called the?A new drug for pain relief is being tested within a given palliative care population. The new drug is being compared to an already approved pain relief drug that is commonly used in providing palliative care to patients who experience chronic severe pain. Assume the patients are asked to rate the pain on a scale from 1 to 10, and the data presented below was obtained from a small study designed to compare the effectiveness of the two drugs. Set up and interpret the results of a Mann-Whitney U test with an alpha of .05. Pain Rating as Reported by Patients Old Drug 1 2 2 4 6 New Drug 1 2 2 3 7 Old Drug New Drug Total Sample (Ordered Smallest to Largest) Ranks Old Drug New Drug Old Drug New Drug 1 1 1 1 1.5 1.5 2 2 2 2 4.5 4.5 2 2 2 2 4.5 4.5 4 3 3 7 6 7 4 8 6…A new drug for pain relief is being tested within a given palliative care population. The new drug is being compared to an already approved pain relief drug that is commonly used in providing palliative care to patients who experience chronic severe pain. Assume the patients are asked to rate the pain on a scale from 1 to 10, and the data presented below was obtained from a small study designed to compare the effectiveness of the two drugs. Set up and interpret the results of a Mann-Whitney U test with an alpha of .05. Pain Rating as Reported by Patients Old Drug 1 3 3 4 6 New Drug 1 2 3 3 7
- A new drug for pain relief is being tested within a given palliative care population. The new drug is being compared to an already approved pain relief drug that is commonly used in providing palliative care to patients who experience chronic severe pain. Assume the patients are asked to rate the pain on a scale from 1 to 10, and the data presented below was obtained from a small study designed to compare the effectiveness of the two drugs. Set up and interpret the results of a Mann-Whitney U test with an alpha of .05. Pain Rating as Reported by PatientsOld Drug 1 2 2 4 6 New Drug 1 2 2 3 7Old Drug New Drug Total Sample(Ordered Smallest to Largest) RanksOld Drug New Drug Old Drug New DrugR1= R2= A) We reject H0 in favor of H1, which states the two populations are not equal at the alpha equals .05 level because the calculated U value of 12.5 is greater than the critical U value of 2.B) We reject H0 in favor of H1, which states the two populations are not equal at the alpha equals .05…A new drug for pain relief is being tested within a given palliative care population. The new drug is being compared to an already approved pain relief drug that is commonly used in providing palliative care to patients who experience chronic severe pain. Assume the patients are asked to rate the pain on a scale from 1 to 10, and the data presented below was obtained from a small study designed to compare the effectiveness of the two drugs. Set up and interpret the results of a Mann-Whitney U test with an alpha of .05. Pain Rating as Reported by Patients Old Drug 1 3 3 4 6 New Drug 1 2 3 3 7 Old Drug New Drug Total Sample (Ordered Smallest to Largest) Ranks Old Drug New Drug Old Drug New Drug…A new drug for pain relief is being tested within a given palliative care population. The new drug is being compared to an already approved pain relief drug that is commonly used in providing palliative care to patients who experience chronic severe pain. Assume the patients are asked to rate the pain on a scale from 1 to 10, and the data presented below was obtained from a small study designed to compare the effectiveness of the two drugs. Set up and interpret the results of a Mann-Whitney U test with an alpha of .05. Pain Rating as Reported by Patients Old Drug 1 3 3 4 6 New Drug 1 2 3 3 7 Old Drug New Drug Total Sample (Ordered Smallest to Largest) Ranks Old Drug New Drug Old Drug New Drug…
- A new drug for pain relief is being tested within a given palliative care population. The new drug is being compared to an already approved pain relief drug that is commonly used in providing palliative care to patients who experience chronic severe pain. Assume the patients are asked to rate the pain on a scale from 1 to 10, and the data presented below was obtained from a small study designed to compare the effectiveness of the two drugs. Set up and interpret the results of a Mann-Whitney U test with an alpha of .05. Pain Rating as Reported by Patients Old Drug 1 2 2 4 6 New Drug 1 2 2 3 7 Old Drug New Drug Total Sample (Ordered Smallest to Largest) Ranks Old Drug New Drug Old Drug New Drug 1 1 1 1 1.5 1.5 2 2 2 2 4.5 4.5 2 2 2 2 4.5 4.5 4 3 3 7 6 7 4 8 6…A new drug for pain relief is being tested within a given palliative care population. The new drug is being compared to an already approved pain relief drug that is commonly used in providing palliative care to patients who experience chronic severe pain. Assume the patients are asked to rate the pain on a scale from 1 to 10, and the data presented below was obtained from a small study designed to compare the effectiveness of the two drugs. Set up and interpret the results of a Mann-Whitney U test with an alpha of .05. Pain Rating as Reported by Patients Old Drug 1 3 3 4 6 New Drug 1 2 3 3 7 A) We fail to reject H0, which states the two populations are equal at the alpha equals .05 level because the calculated Uvalue of 10.5 is greater than the critical U value of 2. B) We fail to reject H0, which states the two populations are equal at the alpha equals .05 level…